Foreign Minister Resigns His Post, in Blow to Regime

By

David Gauthier-Villars,

Alistair MacDonald and

Margaret Coker

Updated March 31, 2011 12:01 a.m. ET

In a major diplomatic setback to Col. Moammar Gadhafi, Libya's foreign minister Moussa Koussa resigned from his position and may announce his defection as early as Thursday, European government officials said,